Problem: You are given three numbers. Is there a way to replace variables A, B and C with these numbers so the equality A + B = C is correct?

Input:

There are three numbers X1, X2 and X3 (1 ≤ Xi ≤ 10^100), each on a separate line of input.

Output:

Output either "YES", if there is a way to substitute variables A, B and C with given numbers so the equality is correct, or "NO" otherwise.

Sample Input:

1

2

3

Output:

YES

Sample Input:

1

2

4

Output

YES

Sample Input:

1

3

5

Output

NO

SAMPLE INPUT
1
2
3

SAMPLE OUTPUT
YES

Solution (in PYTHON):

Solution:
a=int(raw_input())
b=int(raw_input())
c=int(raw_input())
x=[]
x.append(a)
x.append(b)
x.append(c)
x.sort()
if x[0]+x[1]==x[2] or x[0]+x[0]==x[2] or x[1]+x[1]==x[2]:
    print "YES"
else:
    print "NO"